Plate-holder.



10.773,382. PATENTED 00T.25,19o4.

W.F.P0LM'ER,

PLATE HOLDER. 4 APPLICATION FILED rma. 2s, 1904.

No MODEL.

ATTR/VEYS UNITED STATES Patented october 25, 1904.

PATENT OFFICE.

PLATE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 773,382, dated. October25, 1904.

Application led February 23, 1904:. Serial No. 194,764. (No model.)

To all 1.071.071?, t Wawy concern.-

Beit known that I, WILLIAM F. FoLMER, a citizen of the United States,and a resident of the city of New York, borough of Manhattan, in thecounty and State of New York, have invented a new and ImprovedPlate-Holder, of which the following is a full, clear, and exactdescription.

The purpose of the invention is to provide a plate-holder which will notleak light when a slide is being introduced into the holder or is beingwithdrawn therefrom and to admit of both movements o f the slide beingexpeditiously and conveniently accomplished. l

A further purpose of the invention is to provide a spring or tensioncontrolled sealing device for the slide of the plate-holder which may beapplied without necessarily weaken-r ing the holder and which will beexpansive at all times without the liability of light being admitted tothe plates in the holder.

rlhe invention consists in the novel construction and combination of theseveral parts, as

will be hereinafter fully set forth,'and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specilication,

in which similar characters of reference indi-V cate corresponding partsin all the ligures.

Figure 1 is a sectional plan view of the improved plate-holder. Fig. 2is an enlarged longitudinal section taken practically on the line 2 2 ofFig. 1, and Fig. 3 is a perspective view of a portion of aspring-retaining device for a slide of the holder.

The holder in many respects is practically the same as the conventionalplate-holder, comprising a front end section A, a rear end section O,and side sections B, together with opposing slides C', which latter, asusual, are received in grooves 10, extending through the front section Aand produced in the inner faces of the side and rear sections B and O.

As is also customary, the holder is provided with a central partition1l, at each side of which the plates 12 are located, as is shown in Fig.2, thesaid plates being heldin position by retaining devices E. Theretaining devices consist of opposing locking-slides 12', movable to andfrom each other, but limited -and guided in their movement by producingslots 12b in the slides, through which slots screws or pins 12c arepassed into the holder', and at the outer end of each locking-slide 121Lan offset 12d is formed, extending' in direction of theentrance-openings for the holders, and at the opposite end of eachlocking-slide 12 a small lug 12E or its equivalent is produced wherebyto readily operate the said lockingslides. In the operation of the saidslides after a plate has been placed in position in the holder it isheld in position at what may be termed the rear end of the said holderby the said retaining devices E, located at such point, and before theplate is introduced into the holder the offsets 121 are made to enterrecesses 12E, produced in the sides of the holder, as is shown inFig. 1. After a plate has been seated in the holder the lugs 12C aregrasped and the lockingeslides drawn in direction of each other, therebybringing the Aoffsets 12d over the corner portions of the plate, as isshown in Fig. 1, thus securely holding the plate in position, and it maybe here remarked that the forwardends of the offsets 12(1 are more orless beveled, so that the said offsets will pass over the edges Vof theplate freely and without a tendency to mar or scratch the same. The saidfront end section A of the'plate-holder is provided withwhat may betermed a central member 13, separated from the outer members at that endby the grooves 10, through which the slides C' enter the holder. Atopposite sides of the said central member 13 at the front end of theplate holder opposing' recesses 14 are made. The inner end walls'l ofthese recesses 14 are preferably convexed more or less, and the outerend walls 16 of the said recesses are more or less undercut, as isclearly shown in Fig.'2. Opposite each recess 14 at what may be termedthe inner faces of the outer members of the front end section A concavedrecesses 17 are formed, and in order that the slides when they areplaced in the holder may be accurately entered and withdrawn and enteredand withdrawn without a tendency to cause light to enter the holder ahandpiece 18 is'secured to or is integral with the outer face of thesaid lOO Vfront end section A oi: the holder` as is shown in Figs. 1 and2. A

ln each ol'l the recesses 14 a slide-retainer D is located, and eachslide-retainer Dis constructed of spring metal, usually brass. Theseslide-retainers extend into the side sections B ot' the holder, as isshown in Fig. 1, so that the said slide-retainers are ot' greaterleng'th than the width of the slides U, adapted to beforeed over them.These slide-retainers, one of which isshown in detail in Fig. 3, eachcomprise what maybe termed a liat base-section 19 and a more or lessarched outer section 19". The arched outer section 19L o'lE eachslide-retainer preferably stops short at its free end from the free endot' the' base-section.

The base-section ot each slide-retainer is made to iit closely to theinner wall oi' a recess 14 in the iiront section of the plate-holder, asis shown in Fig. 2, and when a slide C has been removed from the holderthe arched portion o't' the retainer L), over which such slide wouldpass, enters a recess 17 in the adjacent outer member of the end sectionA, conforming to the curvature oil the said recess, as is shown in Fig.2, thus acting to block the groove 10, 'from which the slide Wasremoved, and to prevent light Yfrom entering the plate-holder. At thesame time a slide may be readily placed in position in the holder, andil? the slide is by chance entered at an angle instead of being' enteredstraight the slide-retainer' will respond at the point where it iscompressed, remaining entirely sealed at other points in its leng'th,since the upper arched member 19 of each slide-retainer is provided witha series of transverse cuts or slots 20, thereby forming at its archedportion on each retainer a series of springtongues 20, each independentot the other in action.

,ln order to absolutely prevent any light from entering theplate-holder, I secure a covering 21, oi' opaque telt or other suitablefabric, to the outer or arched spring-sections 19u of theslide-retainer, and usually 1 carry this covering at the outside ot' theYfront end section A ot' the plate-holder, securing it thereto by acement oi' any suitable character. Under this construction 1 obtain aplate-holder which is practically absolutely light-tight and in whichthe slides may be quickly and conveniently entered or removed from theholder, as desired. It is not absolutely necessary that the slides shallbe accurately or straightly entered, as has been set forth, since thevarious spring' tongues or lingers on the slideretainers act one afterthe other as the slide is entered.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent 1. 1n a plate-holder, a spring-actuated light lcut-oilI for the slide, the member otl the eutolT adapted i'orengagement with the slide consisting oi a series ofindependently-operating factors, and a support integral with saidfactors, as described.

Q. ln a photographic-plateholder, acut-oli spring' for the slideshaving' a series of tongues arranged i'or engagement with the slides,and anchoring-seetions adapted to be seated in the body ot' the holder,as set forth.

3. In a photographie-plate holder, a cut-ofi' spring for a slide of theholder, comprising an anchoring-section adapted to be litted in the bodyoi' the holder, and a connected arch-seetion divided into a series oftongues, as set forth.

4. In a photographic-plate holder, a frame, slides for the trame,having' recesses in the entrance portion of the iframe for the slides,which recesses extend in the slide portions of the Jframe, eachcomprising an anchoring member and a curved binding member divided intoa series of independent tongues, as described.

Vln a photog'raphic-plate holder, a frame, slides for the trame, havingrecesses in the slide-receiving portion of the frame, extending into itssides, which recesses have beveled inner longitudinal walls and undercutouter longitudinal walls, and binding-springs litted to the recesses ofthe body olf the holder, each binding-spring consisting of ananchoringsection extending' from one longitudinal edge oi' a recess tothe other, and an outwardlyarched retaining-section terminating' shortot' the inner longitudinal edge of the anchoringsection, the saidretaining-section being provided with a series of transverse slots, forthe purpose described.

G. 1n a photographic-plate holder, a frame, slides for the frame, havingrecesses in the slide-receiving portion of the frame, extending into itssides, which recesses have beveled inner longitudinal Walls and undercutouter longitudinal walls, and binding-springs litted to the recesses ofthe body o1' the holder, each binding-spring consisting of ananchoringsection extending Yfrom one longitudinal edge of a recess tothe other, and an outwardlyarched retaining-section terminating short ofthe inner longitudinal edge of the anchoringsection, the saidretaining-section being provided with a series of transverse slots, thesaid frame having additional recesses for the expansion ot' theretaining-sections ot' the binding-springs, set forth.

7. 1n a photographic-platc holder, a frame, slides for the frame, havingrecesses in the slide-receiving portion or' the frame, extending intoits sides, which recesses have-beveled inner longitudinal walls andundercut outer longitudinal walls, binding-springs iitted to therecesses of the body of the holder, each binding-spring consisting ot'an anchoringsection extending from one longitudinal edge o1' a recess tothe other, and an outwardlyarched retaining-section terminating short olIOO TIO

the inner longitudinal edge of the anchoringsection, the saidretaining-section being provided with a series of transverse slots, thesaid frame having additional recesses for the expansion oi' theretaining-sections of the binding-springs, and light-proof materialsecured to the outer faces of the retaining-sectionsvof thebinding-springs, which light-prooil material is carried out through theentrancepassages for the slides of the holder, as set forth.

8. In plate-holders, a plate-retainer, consisting of opposing slidingmembers mounted to move to and from each other and provided at theiropposing ends with projections to be engaged by the linger of theoperator, offsets arranged to extend from the opposite ends of the saidsliding members, which offsets. as the said members are operated, areadapted to be carried over a plate or away from the plate, the twoslides being simultaneously operated, and means for limiting themovement of the sliding members, as described.

9. A plate-holder comprising a frame, a removable slide and a plate inthe head of the frame and having a wing extending into the range ofaction of the slide, said wing being formed with a series of independentnarrow spring-fingers.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

w WILLIAM F. FOLMER.

Witnesses:

J, FRED. ACKER, M. H. LEGGETT.

